Staff Software Engineer, Claude Code

Anthropic Limited; Seattle (WA); Hybrid; USD 320,000 - 625,000; Full time

Benefits offered by this job

Competitive compensation

Equity donation matching (optional)

Generous vacation and parental leave

Flexible working hours

Office space in SF

Job summary

Anthropic Limited is seeking an experienced software engineer to design, build, and maintain scalable AI development tools and infrastructure. You will engage with developers inside and outside Anthropic to gather insights and improve user experience, and collaborate with researchers to enhance model capabilities through shared tools and evals.

You'll contribute across the stack—from front-end UI to back-end infrastructure—driving new features, fixing bugs, and optimizing performance while

Qualifications

• Bachelor’s degree or equivalent in a relevant field.
• 6+ years of work experience.
• Experience building dev tools and AI-powered development workflows.
• Expertise in React, performance optimization and modern patterns.

Responsibilities

• Design, build, and maintain scalable features and infrastructure for AI-powered development tools.
• Engage directly with developers inside and outside Anthropic to gather insights and improve user experience.
• Collaborate with researchers to improve model capabilities through shared tools and evals.
• Develop across the stack—from front-end UI to back-end infrastructure—to develop new features, fix bugs, and optimize performance.

Skills

React development

Full stack development

Prompt engineering

Large language models

Education

Bachelor’s degree

Tools

CLI tools

Container orchestration

Cloud infrastructure

TypeScript projects

Job description

About Anthropic

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

Responsibilities

• Design, build, and maintain scalable features and infrastructure for AI-powered development tools
• Engage directly with developers inside and outside Anthropic to gather insights and improve user experience
• Collaborate with researchers to improve model capabilities through shared tools and evals
• Stay ahead of advancements in AI-assisted coding by experimenting with new tools, evaluating emerging techniques, and tracking enhancements to existing ones
• Contribute across the stack—from front-end UI to back-end infrastructure—to develop new features, fix bugs, and optimize performance
• Dive into possibly unfamiliar areas like Python notebooks, VS Code plug-ins, and containerized environments.

You May Be a Good Fit If You

• Are excited about AI-assisted coding as a tool to enhance developer productivity and creativity—not replace human ingenuity
• Spend a lot of time refining and customizing your AI workflows
• Have experience building and maintaining dev tools
• Are an expert in React development, including performance optimization, modern patterns (hooks, context, suspense), and component architecture
• Specialize in user experience engineering but are a capable full stack developer
• Have hands‑on experience working with large language models and prompt engineering
• Have worked on projects with stringent safety, security and/or compliance requirements
• Care about the societal impacts and ethics of your work
• Have 6+ years of work experience

Strong Candidates May Also Have Experience With

• Building and maintaining CLI tools
• Working in large codebases and quickly jumping in to unfamiliar development environments
• Working with container orchestration and cloud infrastructure
• Scaling TypeScript projects
• Working with alternate JavaScript runtimes like Bun and Deno

Annual Salary

$320,000—$625,000 USD

Logistics

Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience

Required field of study: A field relevant to the role as demonstrated through coursework, training, or professional experience

Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position

Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.

Visa sponsorship: We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a visa, and we retain an immigration lawyer to help with this.

Not all strong candidates will meet every single qualification as listed. Research shows that people who identify as being from underrepresented groups are more prone to experiencing imposter syndrome and doubting the strength of their candidacy, so we urge you not to exclude yourself prematurely and to submit an application if you're interested in this work. We think AI systems like the ones we're building have enormous social and ethical implications. We think this makes representation even more important, and we strive to include a range of diverse perspectives on our team.

How We're Different

We believe that the highest-impact AI research will be big science. At Anthropic we work as a single cohesive team on just a few large-scale research efforts. And we value impact — advancing our long-term goals of steerable, trustworthy AI — rather than work on smaller and more specific puzzles. We view AI research as an empirical science, which has as much in common with physics and biology as with traditional efforts in computer science. We're an extremely collaborative group, and we host frequent research discussions to ensure that we are pursuing the highest-impact work at any given time. As such, we greatly value communication skills.

The easiest way to understand our research directions is to read our recent research. This research continues many of the directions our team worked on prior to Anthropic, including: GPT-3, Circuit-Based Interpretability, Multimodal Neurons, Scaling Laws, AI & Compute, Concrete Problems in AI Safety, and Learning from Human Preferences.

Come work with us!

Anthropic is a public benefit corporation headquartered in San Francisco. We offer competitive compensation and benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and a lovely office space in which to collaborate with colleagues.

Guidance on Candidates' AI Usage: Learn about our policy for using AI in our application process.